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 |  |  | Diff | Volume | Size | Title |
| 2 | 7 | | 1.5 k | 1.4 k | 1.4 k | Y Sffincs Mawr |
| 3 | 5 | | -66 | 180 | 13 k | Aberystwyth |
| 1 | 9 | | 4.8 k | 4.6 k | 4.6 k | Necropolis Giza |
| 2 | 2 | | 729 | 729 | 729 | Cerflun Zeus (Olympia) |
| 2 | 3 | | 278 | 278 | 1.7 k | An Introduction to Welsh Literature |
| 1 | 1 | | 1.8 k | 1.7 k | 1.7 k | Allgo |
| 1 | 1 | | 1.3 k | 1.3 k | 1.3 k | Reid ffair |
| 1 | 1 | | 1.2 k | 1.1 k | 1.1 k | Gŵyl y Gelli, 1988 |
| 1 | 1 | | 1 k | 1 k | 1 k | Cyllell |
| 1 | 1 | | 921 | 921 | 921 | Hino Nacional Brasileiro |
| 1 | 2 | | 315 | 315 | 315 | Categori:Llyfrgelloedd Sweden |
| 1 | 4 | | -116 | 216 | 1.5 k | Which Nation's Schools? |
| 1 | 5 | | 68 | 122 | 1.5 k | The Gwalia |
| 1 | 3 | | 96 | 188 | 1.5 k | The Welsh Gypsies |
| 1 | 3 | | 104 | 140 | 1.5 k | Raymond Garlick (llyfr) |
| 1 | 3 | | -111 | 111 | 1.4 k | Cae Marged |
| 1 | 3 | | 99 | 121 | 1.5 k | Parliamentary Enclosures in Wales |
| 1 | 3 | | 211 | 211 | 2.3 k | Rhestr bywgraffiaduron a bywgraffiadau Cymraeg |
| 1 | 2 | | 195 | 195 | 1.6 k | The Customs and Traditions of Wales |
| 1 | 1 | | 548 | 548 | 548 | Gŵyl y Gelli, 1989 |
| 1 | 3 | | 88 | 208 | 1.4 k | Alun Llywelyn-Williams (llyfr) |
| 1 | 2 | | -23 | 23 | 1.6 k | Teyrnged i Tilsli |
| 1 | 2 | | 133 | 163 | 1.4 k | Welsh Steam |
| 1 | 1 | | 504 | 504 | 504 | Gŵyl y Gelli, 2001 |
| 1 | 1 | | 503 | 503 | 503 | Gŵyl y Gelli, 2008 |
| 1 | 2 | | -113 | 113 | 1.3 k | The Semantics of the Welsh Verb |
| 1 | 3 | | -65 | 65 | 1.4 k | Geology of the Country Around Rhyl and Denbigh |
| 1 | 2 | | 86 | 86 | 1.4 k | Bobi Jones (llyfr) |
| 1 | 2 | | 79 | 79 | 1.4 k | Dylan Thomas (cyfrol) |
| 1 | 3 | | 35 | 35 | 3.1 k | Rhestr o seintiau Cymru |
| 1 | 3 | | 25 | 61 | 1.4 k | Rhydwen Williams (llyfr) |
| 1 | 2 | | 73 | 73 | 845 | Biografisch Portaal van Nederland |
| 1 | 2 | | 53 | 53 | 1.5 k | The Welsh and their Religion (cyfrol) |
| 1 | 2 | | 33 | 33 | 1.4 k | Kate Roberts (llyfr) |
| 1 | 1 | | 259 | 259 | 1.6 k | How Kirsty Jenkins Stole the Elephant |
| 1 | 2 | | -2 | 2 | 1.4 k | Heroes of the Dawn |
| 1 | 1 | | 160 | 160 | 160 | Categori:Addysg yn Sweden |
| 1 | 1 | | 148 | 148 | 1.5 k | Here Be Dragons |
| 1 | 1 | | -147 | 147 | 1.4 k | Llafur y Blynyddoedd |
| 1 | 1 | | 140 | 140 | 1.5 k | A Welsh Folk Dancing Handbook |
| 1 | 1 | | 139 | 139 | 1.6 k | Llangernyw, Llanrwst a Chymru |
| 1 | 1 | | 139 | 139 | 2.2 k | Henry Morton Stanley |
| 1 | 1 | | 133 | 133 | 1.4 k | The Echoes Return Slow |
| 1 | 1 | | 131 | 131 | 1.5 k | The Welsh in Patagonia |
| 1 | 1 | | 112 | 112 | 1.5 k | Llanallgo |
| 1 | 1 | | -112 | 112 | 1.4 k | Pererin - Teyrnged i William Williams Pantycelyn |
| 1 | 1 | | -107 | 107 | 1.4 k | Llyfr Alawon Poced John Parry Dall Rhiwabon |
| 1 | 1 | | -98 | 98 | 1.3 k | Slipars a Llonydd |
| 1 | 1 | | 96 | 96 | 1.3 k | Radnor Old and New |
| 1 | 1 | | 94 | 94 | 1.4 k | The Story of the Harp in Wales |
| 1 | 1 | | 94 | 94 | 94 | Categori:Bywgraffiaduron |
| 1 | 1 | | -90 | 90 | 1.4 k | Mama-Mia |
| 1 | 1 | | 90 | 90 | 1.8 k | Y Bywgraffiadur Cymreig 1951-1970 |
| 1 | 1 | | -88 | 88 | 1.4 k | Gwyddoniadur Mawr y Plant |
| 1 | 1 | | 84 | 84 | 1.5 k | Bro a Bywyd: Kate Roberts 1891-1985 |
| 1 | 1 | | 76 | 76 | 1.6 k | Dewi Sant (llyfr) |
| 1 | 1 | | -75 | 75 | 1.4 k | Philoctetes (Soffocles) |
| 1 | 1 | | 72 | 72 | 1.4 k | The Last Survivor |
| 1 | 1 | | 67 | 67 | 1.6 k | Gronwy Ddiafael, Gronwy Ddu |
| 1 | 1 | | 64 | 64 | 64 | Sheet Memoir Series:95 & 107. Geology of the Country Around Rhyl and Denb… |
| 1 | 1 | | 64 | 64 | 1.7 k | Cydymaith i Lenyddiaeth Cymru |
| 1 | 1 | | 59 | 59 | 1.4 k | Welsh History Through Seals |
| 1 | 1 | | 60 | 60 | 60 | Welsh Gypsies, The - Children of Abram Wood |
| 1 | 1 | | 53 | 53 | 53 | Writers of Wales: An Introduction to Welsh Literature |
| 1 | 1 | | 53 | 53 | 53 | Pocket Guide Series, A: Customs and Traditions of Wales, The |
| 1 | 1 | | 51 | 51 | 51 | A Guide to Parliamentary Enclosures in Wales |
| 1 | 1 | | 50 | 50 | 2 k | Llenyddiaeth yn 2005 |
| 1 | 1 | | 48 | 48 | 48 | Writers of Wales: Alun Llywelyn-Williams |
| 1 | 1 | | 47 | 47 | 47 | Canu Maswedd yr Oesoedd Canol / Medieval Welsh Erotic Poetry |
| 1 | 1 | | 45 | 45 | 1.5 k | John Saunders Lewis (bywgraffiad) |
| 1 | 1 | | -43 | 43 | 1.4 k | A Great Wealth of Lack of Knowledge |
| 1 | 1 | | 42 | 42 | 42 | Writers of Wales: Rhydwen Williams |
| 1 | 1 | | 40 | 40 | 40 | Cerflun Zeus |
| 1 | 1 | | 41 | 41 | 41 | Writers of Wales: Raymond Garlick |
| 1 | 1 | | 41 | 41 | 41 | Which Nation's Schools? Direction and Devolution in Welsh Education in th… |
| 1 | 1 | | 41 | 41 | 41 | Anthem Genedlaethol Brasil |
| 1 | 1 | | 39 | 39 | 39 | Writers of Wales: Dylan Thomas |
| 1 | 1 | | 38 | 38 | 38 | Writers of Wales: Kate Roberts |
| 1 | 1 | | 36 | 36 | 36 | Myth and the Imagination of Mankind Series: Heroes of the Dawn |
| 1 | 1 | | 36 | 36 | 36 | Writers of Wales: Bobi Jones |
| 1 | 1 | | 35 | 35 | 35 | Welsh and Their Religion, The - Historical Essays |
| 1 | 1 | | 35 | 35 | 35 | Teyrnged i Tilsli - Cyfarchion Penblwydd |
| 1 | 1 | | 32 | 32 | 32 | Sffincs Giza |
| 1 | 1 | | 31 | 31 | 1.4 k | Crwydro'r Byd |
| 1 | 1 | | 32 | 32 | 32 | Sffincs Mawr |
| 1 | 1 | | 29 | 29 | 4.2 k | Y Gweilch |
| 1 | 1 | | 28 | 28 | 28 | Gwalia - The Story of a Valleys Shop |
| 1 | 1 | | 28 | 28 | 28 | Cyfres y Cewri: 9. Cae Marged |
| 1 | 1 | | 27 | 27 | 27 | Rhestr reidiau ffair |
| 1 | 1 | | 28 | 28 | 28 | Rala La La - Caneuon o Wlad y Rwla |
| 1 | 1 | | 28 | 28 | 2.1 k | Josiah Thomas Jones |
| 1 | 1 | | 23 | 23 | 23 | Gallgo |
| 1 | 1 | | -23 | 23 | 1.3 k | Folk Heroes of Britain |
| 1 | 1 | | -18 | 18 | 1.6 k | Rhestr o dimau clwb rygbi'r undeb yng Nghymru |
| 1 | 1 | | -15 | 15 | 1.4 k | Japanese Manufacturing Investment in Wales |
| 1 | 1 | | 15 | 15 | 5.4 k | Celtic F.C. |
| 1 | 1 | | -12 | 12 | 3.9 k | Y Dreigiau |
| 1 | 1 | | -12 | 12 | 6.6 k | Y Scarlets |
| 1 | 1 | | -12 | 12 | 3.2 k | Rygbi Caerdydd |
| 1 | 1 | | 7 | 7 | 4.8 k | St Petersburg |
| 1 | 1 | | 2 | 2 | 1.9 k | Oxford Dictionary of National Biography |
| 1 | 1 | | 3 | 3 | 1.6 k | Valentine: Cofiant i Lewis Valentine |
| 1 | 1 | | 0 | 0 | 1.5 k | Rala La La |
| 1 | 1 | | 0 | 0 | 2 k | Canu Maswedd yr Oesoedd Canol |
| 1 | 1 | | 40 | 40 | 362 | Triongl Bermuda |
| 1 | 1 | | 1 | 1 | 12 k | C.P.D. Dinas Bangor |
